Fix stack overflow on unknown kwarg
Fix stack overflow on unknown kwarg

raintank/metrictank,replay/metrictank,replay/metrictank,raintank/raintank-metric,raintank/raintank-metric,raintank/raintank-metric,raintank/metrictank,raintank/metrictank,raintank/metrictank,replay/metrictank,replay/metrictank